Wednesday, March29, 2017 L-36.com


Marine Weather and Tides
Beloit, WI

Version 3.4
What's New / NOTES
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:40AMSunset 7:21PM Wednesday March 29, 2017 6:01 PM CDT (23:01 UTC) Moonrise 7:54AMMoonset 9:22PM Illumination 6% Phase: Waxing Crescent; Moon at 2 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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LMZ646 North Point Light To Wind Point Wi- Wind Point Wi To Winthrop Harbor Il- 256 Pm Cdt Wed Mar 29 2017
.small craft advisory in effect from 10 pm cdt this evening through late Friday night...
Through early evening..Northeast wind 10 to 15 knots rising to 15 to 20 knots. Cloudy. Waves 2 to 4 feet.
Tonight..Northeast wind 15 to 20 knots with gusts to around 30 knots. Rain likely through around midnight, then rain and slight chance of Thunderstorms after midnight. Waves 3 to 4 feet building to 5 to 7 feet.
Thursday..East wind up to 30 knots with gusts to around 35 knots becoming northeast 10 to 20 knots with gusts to around 25 knots. Rain and slight chance of Thunderstorms. Waves 6 to 8 feet.
Thursday night..Northeast wind 15 to 20 knots with gusts to around 25 knots. Rain likely. Waves 5 to 7 feet.
Friday..North wind 15 to 25 knots with gusts to around 30 knots. Chance of rain in the morning, then slight chance of rain in the afternoon. Waves 5 to 7 feet.
LMZ646 Expires:201703300915;;275766 FZUS53 KMKX 291956 NSHMKX NEARSHORE MARINE FORECAST NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 256 PM CDT WED MAR 29 2017 FOR WATERS WITHIN FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN LMZ645-646-300915-

7 Day Forecast for Marine Location Near Beloit, WI
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location: 42.52, -89.05     debug


Area Discussion for - Milwaukee/Sullivan, WI
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Fxus63 kmkx 292020
afdmkx
area forecast discussion
national weather service milwaukee/sullivan wi
320 pm cdt Wed mar 29 2017

Short term
Tonight and Thursday - confidence... Medium
an unsettled period with widespread rain gradually overtaking the
area tonight. The primary mid level circulation will stay to our
south as will the surface and 850 lows. 850 waa/moist advection
takes place tonight and lifts the 850 baroclinic zone northward. The
far northern CWA still looks thermally vulnerable for at least a
brief period of a snow or a mix. Amounts have continued a downward
trend with the 12z run and this has been reflected in the forecast
snow amounts with highest amounts of around an inch in the far
northern reaches of our northern tier of counties. Some decent lift
noted with one 250 millibar jet MAX providing right rear lift
tonight then a renewed southerly upper jet pivots northward around
low with left front positioning on Thursday. Even a hint of some
coupling at times between these 2 features. Throughout the event
both the rap and NAM bufkit soundings show enough elevated CAPE to
warrant at least a small chance of thunder in the southern CWA so
have included that potential.

Thursday night through Saturday... Forecast confidence medium.

The weakening low pressure area and upper low will track from wrn
il to lake erie from Thu nt into Fri eve. The upper trough axis
extending north of the upper low will pass Thu nt into Fri am.

Low to mid level frontogenesis may linger during this time. Thus
rain will continue to be likely over ERN wi for Thu nt with areas
of light rain or drizzle elsewhere including on fri. Gradual cold
and dry air advection Fri aft-eve will eventually lead to
clearing skies. High pressure will then prevail late Fri nt and
sat. The cool temps on Fri will return to seasonal values on sat.

Long term Sunday through Wednesday... Forecast confidence low to
medium.

The passage of a weak shortwave trough and round of warm advection
will bring chances of light rain for late Sat nt-sun nt. Chances
of rain will then continue for mon-wed. Low pressure over the
lower ms river valley will move newd into the ohio river valley
for mon-tue followed by another low moving from the central great
plains into possibly the great lakes for wed-thu.

Aviation(update) Vfr ceilings will progressively lower this
period as rain overspreads TAF sites. Bufkit is showing the
process may take a while, with initially deep dry layer. Seeing
the upstream ifr conditions across ia and western il. Will
gradually head this way especially after 06z. Increasing forcing
will lead to rain development. Already seeing some of this across
eastern iowa with mid level returns into western wi. This precip
fighting off some dry air in the low levels. As low pressure
approaches tonight into Thursday morning we will see ifr ceilings
and vsbys develop. May even have an isolated thunderstorm or two
as soundings are implying some elevated instability. With low
pressure passing to our south later tonight into Thursday a
tightening pressure gradient will set up rather gusty east winds.

Marine Main focus shifts to increasing onshore and long duration
wind regime tonight which gets underway tonight. This will build
high waves near the shore and remain in place through late Friday
night.

Mkx watches/warnings/advisories
Wi... None.

Lm... Small craft advisory from 10 pm this evening to 4 am cdt
Saturday for lmz645-646.

Small craft advisory from 2 am Thursday to 4 am cdt Saturday for
lmz643-644.

Tonight/Thursday and aviation/marine... Collar
Thursday night through Wednesday... Gehring


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KNSW3 - Kenosha, WI 66 mi61 min NNE 14 G 18 38°F 1021 hPa (-4.1)
WHRI2 - Waukegan Harbor, IL 66 mi41 min NE 18 G 21 39°F
MLWW3 - Milwaukee, WI 72 mi41 min NNE 14 G 17 37°F

Wind History for Calumet Harbor, IL
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N9
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N7
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SW6
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N3
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G7
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G10

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Janesville-Rock County, WI7 mi76 minE 15 G 2110.00 miOvercast46°F33°F62%1019.3 hPa
Rockford, Greater Rockford Airport, IL22 mi67 minENE 129.00 miLight Rain47°F36°F66%1019.5 hPa

Wind History from JVL (wind in knots)
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Last 24hrE10
G15
E11E9E4SE3E5E4E5CalmE4NE3NE3CalmNE3NE6NE7E11E11
G16
E12
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1 day agoN6N7NE7CalmCalmNE4E8E3E3NE4NE4NE6NE6NE7NE9NE8N8E10NE7E765NE10NE10
G15
2 days agoN3CalmN6CalmCalmNW4N4CalmCalmCalmCalmN3CalmCalmCalmCalmE5E5E5NE3CalmCalmNE7N7

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Midwest    EDIT
Geos

Wind Forecast for Milwaukee/Sullivan, WI (19,4,5,8)
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Ground Weather Radar Station Milwaukee, WI
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weather_mapweather_map weather_map

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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.